Hi. I have not had a AF attack for a couple of months and after having all my medication reviewed I am feeling really well. I would like to become more active, and shift a few pounds, and was wondering what other peoples views of going to the gym would be. Obviously, I will never be able reach my optimum heart rate as I used to because of the beta blockers that I am on that control my heart rate. Do I need to air on the side of caution.